Vanguard CT-7000 - Manual (Page 12)

CT-7000 Operating Instructions
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3.4 Digital Voltage Input Results
The digital voltage, input channel, “V2” monitors the voltage status as “ON” or “OFF” conditions
and graphs the result. A voltage level above 30 Vdc is considered as the “ON” state. The input
channel is dedicated to monitor the breaker’s auxiliary switch action during a breaker operation.
NOTE
Input voltage ranges from 1 to 300 Vac/dc.
3.5 Initiate Current Results
The CT-7000 not only plots the trip or close current waveforms, but also prints the steady-state
current readings of the trip and close coils during an operation. A typical circuit breaker timing
report is shown on Figure 10.0.
3.6 Slow-Close Test Results
A Slow-Close test determines the contact touch distance and penetration by using the travel
transducer and dry contact channels.
4.0 Test Result Graphics
4.1 Thermal Printer Graphic Printout
A 4.5 inch wide, built-in, thermal printer can output graphic waveforms of the contact channels,
travel curves and actuator-coil currents. Using the Zoom Graphics Mode, the user can enlarge the
graphical outputs by specifying the timing zone. Typical graphical results are shown in Figures
12.0 and14.0.
4.2 Ink-jet Printer Output
A color graphic report can be printed on the HP Ink-jet printer (supplied with each CT-
7000). The CT-7000 will print color graphics of contact channels, travel channels, current wave
forms on 8½ by 11-inch paper.